How to reproduce:
1. Open the attached "SubdivideEdgesRepro.zip" project
2. Open the "SampleScene" Scene
3. Make sure Probuilder tab is opened (Tools -> Probuilder -> Probuilder Window)
4. Select the "Arch" GameObject in the Hierarchy window
5. Make sure Edge Selection is selected in the Scene view
6. Select the closer edge on the right side of the GameObject's bottom
7. Press "Subdivide Edges" in the Probuilder window
8. Repeat 6-7 steps on the opposite edge on the right side of the GameObject's bottom
9. Repeat the 6-8 steps, but on the left side of the GameObject's bottom

Expected result: On both sides, the edges are subdivided correctly
Actual result: The left side's face is deleted, while the right side's edges are subdivided correctly

Reproducible with: 3.0.0 (2018.4.25f1), 4.2.1 (2019.4.5f1), 4.3.1 (2020.1.0f1), 4.4.0-preview.1 (2020.2.0a18)

Notes:
- Could not reproduce on any other shapes
- The issue is reproducible on the default Arch shape, subdividing all top faces, the second one from the left gets deleted